/// <summary>
/// this runs inside SO.SafeMeshRead
/// </summary>
private object LockedComputeMeshBoundaryData(DMesh3 mesh)
{
ComponentData data = new ComponentData();
data.timestamp = mesh.ShapeTimestamp;
MeshConnectedComponents comp = new MeshConnectedComponents(mesh);
comp.FindConnectedT();
if (comp.Count == 1)
{
return(data);
}
// [TODO]
// - a very common case is a huge mesh with a few floaters. We
// should have a way to handle this w/o having to create all
// these spatial data structures for the huge mesh! We can
// do a quick sort based on bounding boxes, and for very
// small submeshes we could use non-fast WN, etc, etc...
DSubmesh3Set subMeshes = new DSubmesh3Set(mesh, comp);
MeshSpatialSort sort = new MeshSpatialSort();
foreach (var submesh in subMeshes)
{
sort.AddMesh(submesh.SubMesh, submesh);
}
sort.Sort();
foreach (var solid in sort.Solids)
{
foreach (var cavity in solid.Cavities)
{
data.InteriorMeshes.Add(cavity.Mesh);
}
if (solid.Outer.InsideOf.Count > 0)
{
data.InteriorMeshes.Add(solid.Outer.Mesh);
}
}
// reverse orientation so that shading and culling works
gParallel.ForEach(data.InteriorMeshes, (m) => {
m.ReverseOrientation(true);
});
return(data);
}
public static void test_sort_mesh_components()
{
DMesh3 mesh = TestUtil.LoadTestInputMesh("bunny_nested_spheres.obj");
MeshConnectedComponents components = new MeshConnectedComponents(mesh);
components.FindConnectedT();
DSubmesh3Set componentMeshes = new DSubmesh3Set(mesh, components);
LocalProfiler p = new LocalProfiler();
p.Start("sort");
MeshSpatialSort sorter = new MeshSpatialSort();
foreach (DSubmesh3 submesh in componentMeshes)
{
sorter.AddMesh(submesh.SubMesh, submesh);
}
sorter.Sort();
p.Stop("sort");
System.Console.WriteLine(p.AllTimes());
DMesh3 resultMesh = new DMesh3();
foreach (var solid in sorter.Solids)
{
if (solid.Outer.InsideOf.Count == 0)
{
MeshEditor.Append(resultMesh, solid.Outer.Mesh);
}
}
TestUtil.WriteTestOutputMesh(resultMesh, "mesh_components.obj");
}
